dangavel - Like any complex computer program, the quality of your output is highly concomitant with the amount of time invested in learning how to use it properly and well.
TRS19 deserves further attention from you for you to begin to appreciate why the majority of Trainz users now believe it is the superior platform for Trainz route creation, session development and asset creation.
Indeed, since TRS19 has evolved from the the very best of what T:ANE SP4 had to offer and has many new and worthwhile features added that T:ANE lacks, this is the smart horse to bet on in your race towards railroad simulation Nirvana.
If dropdown menus are a problem, then learn the shortcut keys and customise the control inputs and interface to suit your needs.
Regarding trees and other vegetation - I created a single-board route and planted just about every Speedtree and tree group in rows making up a plantation that can be easily viewed to allow me to make judicious choices about exactly which trees are good enough, perform well enough and above all, look realistic enough in Asset Preview close-up and then at any distance - to make the cut for inclusion in my current route work in progress.
(And, yep, I totally agree with you that there aren't very many trees in either T:ANE or TRS19 that meet our demanding high-quality expectations, but a few do exist, and more of them are available in TRS19 than in T:ANE).
Personally, I cannot stand billboard trees and other 2D planar efforts/ contrivances.
Used sparingly, TurfFX and Clutter can add much more realism to trackside vegetation and scenery. Unfortunately, these features of TRS19 are not an option for MAC users or T:ANE route developers, but along with PBR textures, they constitute a distinctive difference in the appearance of routes created in TRS19.
In every case where I have brought my own routes over from T:ANE into TRS19 I have been able to improve upon their appearance AND performance by using some of these new effects and the additional tools made available by TRS19's Surveyor mode.
Don't get me wrong - I still love T:ANE and have invested many years of blood, sweat & tears as well as money in its path from early Kickstarter betas to the recent SP4 betas and the current 'final'? SP4 build. Just check out my posts from that entire era.
I now choose to invest more of my time helping like-minded individuals in the continued evolution of the Trainz railway simulator program to achieve even higher performance and more realistic-appearance heights. T:ANE is no longer that vehicle (for me).