First off, I think L4 is awesome! I have been a L3 power user for a few years, but I love all the new features of the new platform even more than all my customized settings of L3. Below are some things I would love to see added and/or fixed regarding L4:
I realize that L4 is still a "baby" and that many bugs are most likely still in the process of being fixed, but these are some suggestions that I hope the Logos 4 team will eventually read and find helpful!
HP Pavilion dv6 Entertainment Notebook | Windows 7 Professional (64-bit) Version 6.1.7600 Build 7600 | Intel Core2 Duo T6600 @2.20GHz | 8GB DDR
With your first point - I have a similiar setup - fill both my with windows and tabs, takes a few seconds to load the layout, or change to a different layout, but once its all open I'm impressed with how fast it is compared to L3. Having several windows open like this will slow the system down somewhat - but for me its still alot faster then L3. Althought my CPU doesn't always run at 100% - if yours does you've probably loaded it up too much I'd imagine. My largest layout contains 18 tabs and 3 floating windows - which has 10 tabs and one window linked together - which runs reasonably well - I have a 2.53G dual core with 4G ram and dedicated graphics card though. Once you start opening up large amounts of tabs you can expect your machine to get considerably slower - like any program that has multiple active windows open at the same time. If its too slow I'd recommend trying to have less open at once.
Logos Platinum (beta channel)
Windows 7 - 64 BitLenovo laptop T9400 Core2Duo 2.53Gig, 4G Ram,GeForce 9300M GS