I had a first look a it, and I quite like it. The name Lemmini doesn't sound that bad IMO (I'm also German)
However there are some problems, or differences to what I'm used to I noticed:
- object animations continue when the game is paused or when fast forwarded, in same speed; that causes for traps, with fast forward more lemmings can pass one trap, it might cause a potential backroute for 'Compression method 1' (Taxing 6) and perhaps also for other levels; pressing pause again can cause that some more lemmings than intended get killed by a trap
- already the first lemmig coming out is affected by the RR, actually the first lemming should come out not depending on the RR
- the climbers seem far too fast to me (twice the speed they actually should have?)
- a climber hitting his head does the 'vaulter' animation (transitioning to walker) at the beginning if his fall; a climber who should actually do this animation (when having finished climbing an object) doesn't do it however
- changing the RR influences the outcoming of the lemmings instantly, at least in the DOS version the RR changes effectively only after outcoming of the next lemming (I actually don't have any problem with it, also, in Cheapo it works the same way, but anyway)
- the 'jumper', a lemming climbing a step of a height 3 - 6 px doesn't have his own animation which causes a skip of a few frames (this problem also appears in the WinLemm version) - actually each 2 px of vertical movement should take one (I think) extra frame *image (jumper) below
- when building on a miner's tunnel or a 45 degree slope (away from it, not into), the following lemmings cannot access the bridge of the builder, might be fixed having the bridge start by 1 px shifted
- it is impossible to assign a builder to a lemming when he would hit his head before setting his first brick
- I did one level with 97% saved (100% needed), and get the "Rock Bottom!" comment, which is (afaik) only meant for 0% saved
Some things I'd like to suggest:
- the scrolling seems a bit slow to me (fortunately there's still the mini-map to scroll), might get a little faster
- the in/decreasing of the RR works also a bit too slow for my taste
- I'd like to have the Enter key for fast forward, as it is used for Lemmings 2 and Cheapo
- the exit in the hell style doesn't have its horns, in the brick style the exit is not completely displayed (the area where the trigger area is located is black), this should be corrected
- it seems a bit strange to me that the numbers of skills/RR is displayed above the button (I don't know about the Amiga version however)
The digger animation, as it was already said, seems a bit strage also to me.
*) here's an image how the jumper looks like in e.g. the DOS version: