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Following a brief review of our contributions to the 2006 European PPStrategy, recent comments on several topics are presented. First of all, it isemphasized that only the simplest version of the fourth chiral generation,namely, minimal SM4 (mSM4) with only one Higgs doublet is in some tension withthe recent LHC data on the Higgs boson search. This tension, which follows fromthe relative strengths of the H --> 4l and Higgs --> {\gamma}{\gamma} channels,can be naturally resolved if there is a mechanism to enhance theH-->{\gamma}{\gamma} width (although any charged and heavy particle couldenhance the H-{\gamma}-{\gamma} loop, 2HDM can be given as an example).  We then emphasize the possible role of the linac-ring type colliders,especially LHeC (QCD Exploder) and TAC super charm factory. The QCD Explorerwill give opportunity to enlighten the origin of the 98.5% portion of thevisible universe's mass. Especially the {\gamma}-nucleus option seems to bevery promising for QCD studies. The TAC super charm factory may provideopportunity to investigate the charm physics with statistics well above that ofthe dedicated runs at Super-B factories.  Finally, it is argued that the history of particle physics (and, moregenerally, the history of the investigation of the fundamental ingredients ofthe matter), a large number of "fundamental" particles, an inflation ofobservable free parameters, and, especially, the mixing of "fundamental"fermions favor the idea of a new set of fundamental particles at a deeperlevel. These new particles can be formulated with the preonic or evenpre-preonic models.

The fourth generation, linac-ring type colliders, preons and so on