What other than timer it could be that makes it feel awkward? That level change spawn logic maybe change, it is not fun to spawn onto enemy's field of view. Is this your gripe? We have also discussed about possibilities of expanding very limited move set and introducing some variation to levels and ways to get those mosquitoes off your back. Now it is all pretty much instakill if they ever spot you.
Thanks for feedback, feel free to drop more feedback if you ever manage to put your finger on what is the problem.